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Can u help me size this steam radiator

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Joseph_4
Joseph_4 Member Posts: 278
I have a customer with old cabinet radiators with steel convectors being used for steam. cant find it in Dan's Edr book. The steel element is 6 inches in depth, 8 inches high and 29 inches wide. The cabinet its contained in is 22 inches high x 32 inches wide
thanks
Joe

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  • Jamie Hall
    Jamie Hall Member Posts: 23,544
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    pictures?
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Steamhead
    Steamhead Member Posts: 16,943
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    Post a pic including with the cover off. There were many different variations of the basic convector. Also, did you see any name or trademark on it?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Joseph_4
    Joseph_4 Member Posts: 278
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  • Joseph_4
    Joseph_4 Member Posts: 278
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    couldnt find name
    Joe
  • Joseph_4
    Joseph_4 Member Posts: 278
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    any ideas?
  • Jamie Hall
    Jamie Hall Member Posts: 23,544
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    No specific ideas -- but you can get a decent estimate of the EDR of that thing by taking the surface area of a fin -- count both sides -- and multiplying by the number of fins. Convert to square feet from square inches. Now -- that will be somewhat high, but not wildly so, but is only valid if the convector cover is on and the openings into that cover are not obstructed in any way.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Joseph_4
    Joseph_4 Member Posts: 278
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    can u explain using the surface area of one fin that 6 x 8 inches and say there are 300 fins thx. dont i still need to know radiation of each fin?
    Joe
  • bburd
    bburd Member Posts: 926
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    6”x8”=48 sq.in. x 2 sides=96 sq. in. per fin.

    96 sq. in. / 144 sq. in. per sq. ft. = 0.666 sq. ft. per fin

    0.666 sq. ft. x 300 fins = 200 sq. ft.

    Bburd
  • Jamie Hall
    Jamie Hall Member Posts: 23,544
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    Or you could alter the sequence of calculation -- the EDR of each fin is 0.666. Then just add them up...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Steamhead
    Steamhead Member Posts: 16,943
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    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting